Unit 1 Scientific Method, Variables, and Lab Safety Flashcards

A set of vocabulary flashcards covering basic scientific skills, microscope power, scientific method steps, experimental variables, and lab safety.

Observation

Information gathered directly through the senses, including sight, smell, hearing, and touch (taste is omitted in lab settings).

Inference

An logical interpretation or explanation of observations.

Qualitative Observation

An observation that describes physical traits or qualities without numerical data, such as 'The plumeria centers are yellow.'

Quantitative Observation

An observation that involves precise counts or numerical measurements, such as 'There are six leaves.'

Microscope Total Power

The overall magnification calculated by multiplying the objective lens power by the eyepiece power, such as $2\times \times 10\times = 20\times$.

Scientific Method

A systematic approach to scientific inquiry involving observation, questioning, hypothesizing, experimenting, analyzing data, drawing conclusions, and communicating results.

Hypothesis

A testable explanation or prediction developed to answer a scientific question.

Independent Variable

The specific variable that is deliberately changed or manipulated by the experimenter during an experiment.

Dependent Variable

The variable that responds to changes made in an experiment, representing the recorded data.

Control Variable

All the factors and conditions that are kept strictly constant throughout an experiment.

Stirring Rod

A laboratory tool used to stir liquid mixtures.

Fire Extinguisher Location

A key lab safety feature noted as being located at the front of the room outside the door.

Accident Protocol

A fundamental lab safety rule requiring that all accidents be reported immediately.